Flow of Diagnosis

On-Board Diagnostics (How to Display and Read Diagnostic Trouble Codes)
- If diagnostic trouble codes present, refer to diagnostic trouble code index.

Trouble Code Index
- Referring to diagnostic trouble code index. Perform indicated procedure.

Engine Tune-Up
- If engine operates, carry out engine tune-up.

Quick Diagnosis Chart
- Referring to quick diagnosis chart, inspect systems related to the problem.

Diagnosis by Symptom
- Choose item that most closely corresponds to actual symptom.
- Referring to symptom troubleshooting, locate the cause of trouble.
- Inspect the suspected faulty system and repair or replace as necessary.